I took me a while to find this answer, so I thought I’d post it. Just in case.

I was having trouble with it, because when I went into the card (Ctrl-A) there was no option to rebuild. Hopefully the Raid failure has not left your OS FUBAR, because you need to run their software. It can be found here.

You will need to register your board before downloading. So you’ll need the serial # off it.